The percentage difference between 35 and 175 is calculated by finding the absolute difference between the two numbers, which is 140, and then dividing it by the average of the two numbers, which is (35+175)/2 = 105.

So, the percentage difference is (140/105) x 100% = 133.33%.

This means that the difference between 35 and 175 is 133.33% of the average of the two numbers. In other words, 175 is 133.33% more than 35.

Understanding percentage difference is important in many fields, such as finance, economics, and science, where changes in values are often expressed as percentages.